February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test...
-
Upload
georgiana-taylor -
Category
Documents
-
view
216 -
download
0
description
Transcript of February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test...
![Page 1: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/1.jpg)
February 8, 2016
• Warm-Up: Electricity WS
• Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15.
• Quiz Thursday: static & current electricity, AC & DC current, series & parallel circuits
![Page 2: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/2.jpg)
February 8, 2016
• Warm Up: start Simple Machines WS
• Homework: USA Test Prep and Skills Tutor #9 due by Friday @4:15
• Test Wednesday: Chapters 5, 6, & 8
![Page 3: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/3.jpg)
SPS8. Students will determine relationships among force, mass, and motion.
• a. Calculate velocity and acceleration. – Know the difference– Know the units– Know how to solve the problems– Know how to interpret the graphs
![Page 4: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/4.jpg)
Question 1
• An object accelerates if its• A. Speed remains constant• B. Direction changes• C. Mass remains constant• D. Motion can be plotted on a graph
![Page 5: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/5.jpg)
Question 1
• An object accelerates if its• A. Speed remains constant• B. Direction changes• C. Mass remains constant• D. Motion can be plotted on a graph
![Page 6: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/6.jpg)
Question 2
• Which kind of forces are exerted on an object if there is a net force of zero?
• A. Unbalanced• B. Kinetic friction• C. Gravity• D. Balanced
![Page 7: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/7.jpg)
Question 2
• Which kind of forces are exerted on an object if there is a net force of zero?
• A. Unbalanced• B. Kinetic friction• C. Gravity• D. Balanced
![Page 8: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/8.jpg)
SPS8. Students will determine relationships among force, mass, and motion.
• b. Apply Newton’s three laws to everyday situations by explaining the following: 1) Inertia 2) Relationship between force, mass and acceleration 3) Equal and opposite forces – Know real world examples– If given a situation, be able to predict what will
happen
![Page 9: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/9.jpg)
Question 3
• Which two forces operate to keep a moon in orbit around a planet?
• A. Inertia and gravity• B. Inertia and friction• C. Friction and gravity• D. Distance and gravity
![Page 10: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/10.jpg)
Question 3
• Which two forces operate to keep a moon in orbit around a planet?
• A. Inertia and gravity• B. Inertia and friction• C. Friction and gravity• D. Distance and gravity
![Page 11: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/11.jpg)
Question 4
• A baby pushes on a large chair. What is the reaction force?
• A. Friction pushes on the chair• B. Friction pushes on the baby• C. The chair pushes on the baby• D. The chair pushes on the floor
![Page 12: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/12.jpg)
Question 4
• A baby pushes on a large chair. What is the reaction force?
• A. Friction pushes on the chair• B. Friction pushes on the baby• C. The chair pushes on the baby• D. The chair pushes on the floor
![Page 13: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/13.jpg)
Question 5
• A student kicks a soccer ball across a field. The ball rolls across the field and stops. What causes the ball to stop?
• A. Gravity acts on it• B. Its own inertia stops it• C. Friction acts on it• D. Balanced forces act on it
![Page 14: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/14.jpg)
Question 5
• A student kicks a soccer ball across a field. The ball rolls across the field and stops. What causes the ball to stop?
• A. Gravity acts on it• B. Its own inertia stops it• C. Friction acts on it• D. Balanced forces act on it
![Page 15: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/15.jpg)
SPS8. Students will determine relationships among force, mass, and motion.
• c. Relate falling objects to gravitational force – Understand how objects accelerate due to gravity– Understand that the gravitational attraction
between two objects depends on MASS and DISTANCE
![Page 16: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/16.jpg)
Question 6
• Suppose you roll a basketball and a baseball toward each other. How does this affect the force they exert on each other?
• A. It increases• B. It decreases• C. It stays the same• D. It disappears
![Page 17: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/17.jpg)
Question 6
• Suppose you roll a basketball and a baseball toward each other. How does this affect the force they exert on each other?
• A. It increases• B. It decreases• C. It stays the same• D. It disappears
![Page 18: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/18.jpg)
Question 7
• Which pair of objects will have the LEAST gravitational attraction?
• A. Two cinder blocks 6 cm apart• B. Two marbles 12 cm apart• C. A cinder block and a marble 6 cm apart• D. A cinder block and a marble 12 cm apart
![Page 19: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/19.jpg)
Question 7
• Which pair of objects will have the LEAST gravitational attraction?
• A. Two cinder blocks 6 cm apart• B. Two marbles 12 cm apart• C. A cinder block and a marble 6 cm apart• D. A cinder block and a marble 12 cm apart• Gravitational attraction depends on mass and
distance
![Page 20: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/20.jpg)
SPS8. Students will determine relationships among force, mass, and motion.
• d. Explain the difference in mass and weight. – Know that weight changes if gravity changes, but
mass does not
![Page 21: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/21.jpg)
Question 8
• Which statement is correct?• A. Weight is the amount of material in an
object• B. Mass is the physical dimensions of an
object• C. Weight is the gravitational pull on an object• D. Mass is the gravitational pull on an object
![Page 22: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/22.jpg)
Question 8
• Which statement is correct?• A. Weight is the amount of material in an
object• B. Mass is the physical dimensions of an
object• C. Weight is the gravitational pull on an
object• D. Mass is the gravitational pull on an object
![Page 23: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/23.jpg)
Question 9
• Your weight on Mars is only about 1/3 your weight on Earth. Which reason BEST explains this?
• A. Mars is more massive than Earth• B. Mars has a smaller force of gravity than Earth• C. Mars has a greater force of gravity than Earth• D. An object on Mars has less mass than the same
object on Earth
![Page 24: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/24.jpg)
Question 9
• Your weight on Mars is only about 1/3 your weight on Earth. Which reason BEST explains this?
• A. Mars is more massive than Earth• B. Mars has a smaller force of gravity than Earth• C. Mars has a greater force of gravity than Earth• D. An object on Mars has less mass than the same
object on Earth
![Page 25: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/25.jpg)
SPS8. Students will determine relationships among force, mass, and motion.
• e. Calculate amounts of work and mechanical advantage using simple machines. – Know the six simple machines– Understand how they help us do work– Know how to calculate work and MA if given the
basic versions of the formula– Know units of work, force, and distance
![Page 26: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/26.jpg)
Six Simple Machines
• Inclined Plane• Wedge• Screw
• Lever• Pulley• Wheel & Axle
![Page 27: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/27.jpg)
Mechanical Advantage
![Page 28: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/28.jpg)
Inclined Plane
• Reduces force, but increases distance• The mechanical advantage of an inclined plane
is length divided by height. • Wedges and screws are types of inclined
planes.
![Page 29: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/29.jpg)
![Page 30: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/30.jpg)
MA = L/H
![Page 31: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/31.jpg)
Wedge
• A wedge generates outward forces• A wedge is a type of inclined plane. Its
mechanical advantage is its length divided by its greatest thickness.
![Page 32: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/32.jpg)
Screw
• A screw is an inclined plane wrapped around a cylinder
• Uses a small force over a longer distance
• The closer the threads, the lower the force required
![Page 33: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/33.jpg)
Levers – Three Classes
• Can change direction & size of force• In a first-class lever, the fulcrum is between
the force and the load.• In a second-class lever, the load is between
the force and the fulcrum. • In a third-class lever, the force is between the
fulcrum and the load.
![Page 34: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/34.jpg)
First Class LeverChange direction & maybe force
![Page 35: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/35.jpg)
Second Class LeverChange force, but not direction
![Page 36: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/36.jpg)
Third Class LeverDon’t change direction, output < input
![Page 37: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/37.jpg)
Pulleys
• Change direction and may change input force• Types of pulleys include fixed pulleys, movable
pulleys, and block and tackles.
![Page 38: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/38.jpg)
![Page 39: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/39.jpg)
Wheel and Axle
• The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle.
![Page 40: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/40.jpg)
Compound Machines
• Compound machines consist of two or more simple machines.
• Compound machines have low mechanical efficiencies because they have more moving parts and therefore more friction to overcome.
![Page 41: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/41.jpg)
Question 1
• Which of the following simple machines is a wedge?
• A. Wheelbarrow• B. Doorknob• C. Ax• D. Truck ramp
![Page 42: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/42.jpg)
Answer
• Which of the following simple machines is an example of a wedge?
• A. Wheelbarrow• B. Doorknob• C. Ax• D. Truck ramp
![Page 43: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/43.jpg)
Question 2
• What is the pivot point of a lever called?• A. Load• B. Fulcrum• C. Wedge • D. Effort
![Page 44: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/44.jpg)
Answer
• What is the pivot point of a lever called?• A. Load• B. Fulcrum• C. Wedge • D. Effort
![Page 45: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/45.jpg)
Question 3
• A student pushes on a lever with a force of 40N. The 150N load does not move. Which of the following is true?
• A. Input force is 40 N and work done is 0 J.• B. Input force is 40 N and work done is 600 J.• C. Output force is 40 N and work done is 150J.• D. Output force is 150N and work done is 40J.
![Page 46: February 8, 2016 Warm-Up: Electricity WS Homework: Read & take notes chapter 18, section 3. USA Test Prep and Skills Tutor #9 due Friday by 4:15. Quiz.](https://reader036.fdocuments.in/reader036/viewer/2022062413/5a4d1b617f8b9ab0599ad53a/html5/thumbnails/46.jpg)
Answer
• A student pushes on a lever with a force of 40N. The 150N load does not move. Which of the following is true?
• A. Input force is 40 N and work done is 0 J.• B. Input force is 40 N and work done is 600 J.• C. Output force is 40 N and work done is 150J.• D. Output force is 150N and work done is 40J.